The classification of colors, in this case, of the skin, according to their ability to assimilate solar radiation, was created by Thomas B. Fitzpatrick in the year 1975.
This dermatologist graduated from Harvard University devised a classification based on the response that different skin colors under ultraviolet light.
It is from then until today that it is used as a tool for dermatological studies on skin color, even for . There are six phototypes that he describes.
Classification of skin tones
Type of skinGeneral characteristicsReaction to UV lightPale and delicate white skin. The vast majority of the time are redheads. They do not have the ability to tan, as their skin suffers from burns, irritations and can present photoallergic reactions. II They have highly sensitive white skin. The hair can be blonde or brown. They have the ability to barely tan, but also to burn.IIIThis skin is more intermediate. It corresponds to people with brown hair. When exposed to the sun they tend to redden first and then tan. In this case the skin is darker. Their hair is generally black or brown. They tan quickly in direct sunlight. VThe color of their skin is brown, cinnamon or copper. It is rare to be affected by the sun. VI They are people with very dark skin, which is They are commonly referred to as black skin. Sun resistance is superior, since it rarely burns, but it can tan.